A galvanometer, having a resistance of 50 $\Omega$ gives a full scale deflection for a current of 0.05 A. The length in meter of a resistance wire of area of cross-section $2.97 \times 10^{–2} cm^2$ that can be used to convert the galvanometer into an ammeter which can read a maximum of 5 A current is (Specific resistance of the wire = $5 \times {10^{ - 7}} \Omega m$)